the large wrap around motor foe ball mill

ball mill wrap around motor

Ring gear drives huge grinding mill | Machine Design. By this summer, a grinding mill that is bigger around than a Boeing 747 will turn ... Following the SAG mill will be two 9,000-hp ball mills, each one 20-ft in diam. and ... and a ring motor (gearless drive), either of which wraps around the mill.

ABB acquires ring motor business from Alstom

ABB acquires ring motor business from Alstom Acquisition enables ABB to further strengthen gearless mill drive system business Zurich, Switzerland, July 30, 2013 – ABB, the leading power and automation technology group, announced today the acquisition of Alstom's ring motor business to enhance its gearless mill drive (GMD) system business.

Building a Ball Mill for Grinding Chemicals

Motor. Have an open when searching for this. It is definitely the most expensive and most important part in your ball mill, but if you look around enough you can surely find one for free. The motor should probably run at a least 500 rpm. Higher is fine; it'll just mean you'll need a greater reduction ratio.

ABB acquires ring motor business from Alstom - ABB

The gearless motor - also called wrap-around motor or ring motor - is a very large synchronous machine which uses power electronics and a magnetic field to control the speed of the motor rotation. With no mechanical interaction between the stationary and rotating parts, there is a significant reduction in the amount of energy used, fewer parts and higher reliability.

the large wrap around motor foe ball mill

Large Ball Mills For Sale: Mine Girnding Mills. Planetary gear drives for large ball mills. ) install the pinion with a large the large wrap around motor for ball mill sale; large indian grinding stone value;

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IMPROVING ENERGY EFFICIENCY IN BARRICK GRINDING .

part of gold recovery requiring crushers, large diameter semi-autogenous grinding (SAG) mills and ball mills with up to 12,000 kW motors. Ore grinding can account for 60% of a site's electrical power load and more than 35% of the operation's greenhouse gases (GHG) as measured in tonnes of CO 2 equivalent.

Gearless mill drives Go gearless - ABB Ltd

Milling - Energy intensive and high maintenance

the stator is built around the mill shell. This is also the reason why the ... ring motor is also known as wrap-around motor. 9 12 6 18 36 Central Drive Single Pinion Dual Pinion Gearless Number of mills Power [MW] 4 Figure 1. Quantity versus power of mill systems. ... converter based drive systems provide benefits that improve the ball mill ...

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The cage mill designed for the lowest product oversize, highest product yield and best crushing efficiency. Product enters first row from center input chute. Moving rows of strike plates impact product. Product enters next row and is impacted by strike plates moving in the opposite direction at a higher velocity. Only the oversized product is reduced.

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Enjoy serenity of nature from the large wrap around porch. Listen to the rain on metal roof. Home has brand new well, total electric central HVAC, wood burning fireplace, flooring, paint, granite, stainless steel appliances & more!! Back up gas heat available. Large upstairs .

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INNOVATION NEWS Mills and GMDs - ABB Group

GRINDING MILLS-SAG MILLS-Page 2-New & Used Mining ...

SAG mills are essentially autogenous mills, but utilize grinding balls in addition to large rocks to aid in grinding. A SAG mill is generally used as a primary or first stage grinding solution. SAG mills are used at gold, copper and platinum mines with applications also in .

Predicting the overall specific energy requirement of ...

However, in this situation the ball mill has to supply this energy and it has a different (higher) work index than the crusher (i.e., the ball mill is less energy efficient than a crusher and has to input more energy to do the same amount of size reduction).

Field coil - Wikipedia

A field coil is an electromagnet used to generate a magnetic field in an electro-magnetic machine, typically a rotating electrical machine such as a motor or generator. It consists of a coil of wire through which a current flows.

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Lag times for purchasing new grinding equipment make it difficult for mines to acquire the equipment they need to start production. A.M. King offers a solution to this problem with their large inventory of used mining equipment including ball mills, SAG mills, and used crushing equipment.